If the perimeter of the diamond is 8 cm and the height is 1 cm, the degree ratio of the two adjacent angles of the diamond is 0 How to prove it? What is the definition? Is the 30 degree angle of a right triangle equal to half of the hypotenuse?

Directly through the definition!
The side length of the diamond is 2 and the height is 1
So, one angle is 30 degrees, and the adjacent angle is 150 degrees
So, 5:1 or 1:5

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